World's top 20 wealthiest people Thu Mar 10 2005 19:37:42 ET Following is a list of the 20 richest individuals and their estimated net worth in billions of dollars, according to an annual ranking by Forbes Magazine. 1. William Gates III US 46.5 (Microsoft) 2. Warren Buffett US 44.0 (investments) 3. Lakshmi Mittal India 25.0 (steel) 4. Carlos Slim Helu Mexico 23.8 (telecom) 5. Prince Alwaleed Bin Talal Saudi Arabia 23.7 (investments) 6. Ingvar Kamprad Sweden 23.0 (Ikea) 7. Paul Allen US 21.0 (Microsoft) 8. Karl Albrecht Germany 18.5 (supermarkets) 9. Lawrence Ellison US 18.4 (Oracle) 10 S. Robson Walton...